钢的酸蚀宏观检验国内外标准对比分析

Domestic and international standard comparison analysis for steel of macroscopic examination by etching

酸蚀宏观检验是最常用的检验钢的低倍组织及缺陷的方法，国内外都制定了钢的酸蚀宏观检验方法标准。本文针对酸蚀试验用试样的取样部位、取样方法、试样的尺寸与制备、试验方法、浸蚀剂的类型、试验温度和时间等方面差异作了对比分析，同时介绍了新修订的GB／T226和由我国主导修订中的国际标准ISO／DIS4969标准的主要修订内容，并对钢的酸蚀宏观检验方法标准的发展提出了建议，供大家参考。

Macroscopic examination by etching is the most commonly used method macrostructure and defect inspection of steel, at home and abroad have developed a test method standard for steel of macroscopic examination by etching. In this paper, etching test specimen sampling sites, sampling methods, test piece size and preparation, test methods, the type of etehant, the test temperature and time made a comparative analysis, At the same time introduced a new revised GB / T226 and dominated by the revision of the international standard ISO / DIS4969 standard main amendments, Proposed standard for steel of macroscopic examination by etching development proposals, for your reference.